companies leave either directly before their ipo period, or after, when they were looking at a higher rapayroll t. supervisor mirkarimi: is the converse may be an incentive for companies? those companies already going through their economic transition. what about companies that we want to bring into san francisco? promote that we are now undertaking this. down the road, potentially reforming the payroll tax. >> i think it would be valuable. there are certainly many technology start-ups in san francisco, in the region outside of san francisco. i would venture to guess the city's payroll tax option is a disincentive for many. to the extent that this mitigates the problem for those companies, it would make it more attractive for them to be in san francisco, and would be an important signal to the industry that we are committed to maintaining a healthy sector. supervisor mirkarimi: i know presidents chiu and i had submitted some amendments. i thought the feedback was a program for us to adjust the period back to six years. i know when twitter was occurring, i felt eight years was a bit too much, but